{"id":"CVE-2024-26875","revision":"0037252fe5b743429c1f69172c65ef39","records":[{"revision":"0037252fe5b743429c1f69172c65ef39","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-26875","aliases":[],"title":"media: pvrusb2: fix uaf in pvr2_context_set_notify","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pvrusb2: fix uaf in pvr2_context_set_notify\n\n[Syzbot reported]\nBUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35\nRead of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26\n\nCPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024\nWorkqueue: usb_hub_wq hub_event\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0xc4/0x620 mm/kasan/report.c:488\n kasan_report+0xda/0x110 mm/kasan/report.c:601\n pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35\n pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline]\n pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272\n\nFreed by task 906:\nkasan_save_stack+0x33/0x50 mm/kasan/common.c:47\nkasan_save_track+0x14/0x30 mm/kasan/common.c:68\nkasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640\npoison_slab_object mm/kasan/common.c:241 [inline]\n__kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257\nkasan_slab_free include/linux/kasan.h:184 [inline]\nslab_free_hook mm/slub.c:2121 [inline]\nslab_free mm/slub.c:4299 [inline]\nkfree+0x105/0x340 mm/slub.c:4409\npvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline]\npvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158\n\n[Analyze]\nTask A set disconnect_flag = !0, which resulted in Task B's condition being met\nand releasing mp, leading to this issue.\n\n[Fix]\nPlace the disconnect_flag assignment operation after all code in pvr2_context_disconnect()\nto avoid this issue.","state":0,"publishedAt":"2024-04-17T10:27:33.914+00:00","modifiedAt":"2026-10-15T00:38:57.915+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/media/usb/pvrusb2/pvrusb2-context.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e5be15c63804e05b5a94197524023702a259e308\",\n                            \"lessThan\": \"ed8000e1e8e9684ab6c30cf2b526c0cea039929c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e5be15c63804e05b5a94197524023702a259e308\",\n                            \"lessThan\": \"d29ed08964cec8b9729bc55c7bb23f679d7a18fb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e5be15c63804e05b5a94197524023702a259e308\",\n                            \"lessThan\": \"ab896d93fd6a2cd1afeb034c3cc9226cb499209f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e5be15c63804e05b5a94197524023702a259e308\",\n                            \"lessThan\": \"eb6e9dce979c08210ff7249e5e0eceb8991bfcd7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e5be15c63804e05b5a94197524023702a259e308\",\n                            \"lessThan\": \"3a1ec89708d2e57e2712f46241282961b1a7a475\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e5be15c63804e05b5a94197524023702a259e308\",\n                            \"lessThan\": \"8e60b99f6b7ccb3badeb512f5eb613ad45904592\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e5be15c63804e05b5a94197524023702a259e308\",\n                            \"lessThan\": \"40cd818fae875c424a8335009db33c7b5a07de3a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e5be15c63804e05b5a94197524023702a259e308\",\n                            \"lessThan\": \"eaa410e05bdf562c90b23cdf2d9327f9c4625e16\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e5be15c63804e05b5a94197524023702a259e308\",\n                            \"lessThan\": \"0a0b79ea55de8514e1750884e5fec77f9fdd01ee\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/media/usb/pvrusb2/pvrusb2-context.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.26\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.26\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.19.311\",\n                            \"lessThanOrEqual\": \"4.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.273\",\n                            \"lessThanOrEqual\": \"5.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.214\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.153\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.83\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.23\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.7.11\",\n                            \"lessThanOrEqual\": \"6.7.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.8.2\",\n                            \"lessThanOrEqual\": \"6.8.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.9\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c","https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb","https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f","https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7","https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475","https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592","https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a","https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16","https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-26875","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-26875","identifiers":["CVE-2024-26875"]},"retained":false,"historicalAffected":[]}],"coverage":[]}